Improvement in lamp-burners



VPniinvr OFFICE.

HIRAM w. nAvDEN, on WATERBURY, CONNECTICUT, AssIGNon To HOLME BOOTHVSU HAYDENS, OF SAME PLACE. y

IMPROVEMENT IN vLAMP-BURNERS.

Specification forming part of Letters Patent No. 115,466, dated May 30, 1871.

To allfwhom it may concern:

Be it known that I, HIRAM W. HAYDEN, of Waterbury, in the county of New Haven and State of Connecticut, have'invented and made an Improvement in Lamps; and the following is declared to be a correct description of the same. i v

Thisinvention is an improvement upon the Argand lamp patented `by me July 12, A. D. 1870, No. 106,363, and this invention relates to au improvement in the interior air-tube for rendering the same stronger and preventing the llame flickering in consequence, of irregularity in the ascending currents. I also make e use of a movable collar screwed upon the lower end of the burner, so that the ilat wick will be heldin nearly a cylindrical form, and the burner can be screwed uponthe ordinary-sized collar of the reservoir. By the removal of the collar from the burner the lower end of the wick-tubeis exposed, so as to facilitate the insertion of the wick. h

`In the drawing, Figure `1 is a vertical section of the lamp-burner; Fig. 2is an inverted plan of the same; Figs. 3 and 4 are side views i e of the air-tube detached;` and Fig.'5 is a side j view, showing the air-tube previous to bending and soldering.

`The wick-tube a, screw b, air -distributer c, chimney-holder d, guide o, wick-holder i, rackbar l, and wheels h and lc, are of the same general character as the partsset forth and shown i in said patent, and therefore do notrequire further description.

The inner air-tube c, instead of being made of two pieces soldered together, is made out of one piece of metal thatis notched out, as shown in Fig.\5, and then bent up into the form shown in Fig. 3, and the edges soldered together. l `lily having the parts c f of the airtube made of V011e piece of `metal, the metal that remains to join them (after the notch is cut) forms a rounding corner to prevent the wick being caught by any roughness in moving past this point; it alsoretains the pieces of the air-tube in the proper relative position while being soldered, and makes the air-tube much stronger and more reliable than it would be if made of twoentirely separate pieces. I

also introduce within the air-tube e a vertical division-plate, 3, to give an upward direction to the currents of air that pass into said tube c, and thereby prevent the flickering of the flame that arises from eddies in the air as it passesinto the said tube e. The screw b is of 6 of the reducingfband forms a guide for the wick and retains it in almost a cylindrical form, so that it will pass freely up 'or down the wick-tube. The guide m for the rack-bar l is made out of the sheet metal of the burnershell c', so as to be strong and not liable to break oif in use. To form this guide the sheet metal of the shell is cut out for the reception of the lower end of the wick-tube; but the guide on is left projecting in this opening, and the lower end of the wick-tube a is removed at one side sufficiently to allow the said ltube to project through the opening in the shell at all parts, except where the guide m is formed; and to retain the parts rmly in place the said tube al is spread both above and below the portion of said burner-shell (below the screw b) that surrounds said tube a, as seen' in Fig. l. A

I am aware that a dat tube for a lamp has been made with a flaring lower end, and with teats or projections to take portions of the sheet metal of the burner also, that a wicktube has had two projecting ribs upon it.

I claim as my inventionl. The interior air-tube c, made out of one piece of metal, notched, bent, and soldered in the manner and for the purposes set forth.

2. The guide m for the rack l, made of the metal of the burner-shell, and projecting insidethe wick-tube e, as and for the purposes set forth.

3. The exterior Argand wick-tube a, united to the shell" of the burner by passing said tube through the metal of the shell and spreading said1 tube above and below said shell, as speeief.

4. The reducing-band 5, made with an i11- terual screw for the burner-screw b, and an external screw, 6, of smaller diameter for the reservoir, as and for the purposes set forth.

Signed by me this 9th day of March, A. D. 1871.

H. W. HAYDEN.

Witnesses i AUGUSTUS M. BLAKESLEY, E. S. HAYDEN. 

